[time-nuts] Lucent KS-24361/Thunderbolt antenna advice sought.

[Bob Camp]

Hi

Both units put out DC to the antenna. With them “dc coupled” to each other and the antenna, you may
see “antenna open” (low current) warnings. There are multiple solutions ranging from using DC loaded
couplers (HP/Symmetricom) or simply tacking a resistive load on a multi-port splitter (Mini-Circuits). If 
cost is an issue and you can find a 3 or 4 port 2 GHz satellite dish splitter, those also work. 

Bob

> On May 4, 2015, at 8:18 AM, Oghma <oghma at live.co.uk> wrote:
> 
> Hi, all
> I've only recently joined time-nuts, having recently become interested in having a stable, accurate frequency reference available - mainly for amateur radio applications in the 1-24GHz region. 
> 
> Anyway, I have a Trimble Thunderbolt GPSDO, and a Lucent KS-24361 (REF 0 & REF 1 units), and would like to have them both connected to the same antenna. I know that the KS-24361 puts out a dc feed on the TNC to power an active antenna, but am not sure whether the Thunderbolt does the same...
> So, can anyone who knows a little more about these two units recommend an antenna that will be suitable for both?  
> 
> Sorry if this is too basic a question for this list - I have had a look though a lot of the archive, but I can't seem to find the answer, and there doesn't appear to be a decent search facility :(
> 
> Many thanks, in advance for any advice/ recommendations
> 
> John
> 
> Sent tomorrow, from my time machine. 
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